St. Robert Bellarmine's 5 opinions pertain only to the heresy of a Pope "as a private person" and does not include the possibility of any error whatsoever corrupting the universal/ordinary magisterium, which is what Bergoglio has done publicly for more than 10 + years.
Therefore, it's best to just accept the unfortunate truth instead of parroting inane Salza & Siscoe talking points.
I have not read S&S on St Robert Bellarmine's five opinions, Hank, but I do have a copy of St Robert's work. I do not see where he states that his argument relates to private heresy only. Are we on the same page? He does call all of these five 'opinions', and even the one he calls the 'true opinion', he doesn't hold to, because he actually believes that God would not let the Pope become a heretic in the first place. He does state, in his examination of the second opinion, that "jurisdiction is certainly given to the Pontiff by God, but with the agreement of men, as is obvious; because this man, who beforehand was not Pope, has from men that he would begin to be Pope,
therefore, he is not removed by God unless it is through men".
Let's face it, these are all theological opinions, and no theologian really envisaged the current state of the Church - although St Robert seems to have come close where he talks about resisting the Pope who
wants to destroy the Church. We are in uncharted territory. There is doubt. Sedevacantists want to make something certain that is by no means certain. The Church has not settled this matter, so we ought not to pretend to. Even the third opinion, that the Pope cannot be deposed on account of heresy, whether secret or manifest, St Robert calls 'extremely improbable', which is not impossible, and has not been condemned by the Church.
It is indeed truth that we must accept, not opinion.